Names of 166421
| Nominal | 166421 |
| Cardinal | one hundred sixty-six thousand four hundred twenty-one |
| Ordinal | 166,421st |
| This number as US currency | one hundred sixty-six thousand four hundred twenty-one dollars |
| Is 166421 an odd number? | 166421 is an odd number |
| Is 166421 an even number? | 166421 is NOT an even number |
| Is 166421 a palindrome? | 166421 is NOT a palindrome number |
| Is 166421 a triangle number? | 166421 is NOT a triangle number |
166421 in other Bases
| Base 2 (Binary) | 1010001010000101012 |
| Base 3 (Ternary) | 221100212023 |
| Base 4 (Quaternary) | 2202201114 |
| Base 5 (Quinary) | 203111415 |
| Base 6 (Senary) | 33222456 |
| Base 8 (Octal) | 5050258 |
| Base 12 (Duodecimal) | 8038512 |
| Base 16 (Hexadecimal) | 28A1516 |
| Base 20 (Vigesimal) | 10G1120 |
Primes and Factors tests for 166421
| Is 166421 a Prime Number? | 166421 is NOT a prime |
| Is 166421 a perfect number? | 166421 is NOT a perfect number |
| Is 166421 a Mersenne Prime? | 166421 is NOT a Mersenne prime |
| Is 166421 a Fermat Prime? | 166421 is NOT a Fermat prime |
| Is 166421 a Fibonacci Prime? | 166421 is NOT a Fibonacci prime |
| Is 166421 a Partition Prime? | 166421 is NOT a Partition prime |
| Is 166421 a Pell Prime? | 166421 is NOT a Pell prime |
| Prime Factors | Prime factors of 166421 |
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166421 in other Numerals
| 166421 in Roman Numeral | CLXVMCDXXI |
| 166421 in Chinese Numeral | 壹拾萬陸萬陸仟肆佰貳拾壹 |
| 166421 in Egyptian Numeral | 𓆐𓂲𓇁𓍥𓎇𓏺 |
| 166421 in Babylonian Numeral |    |
Roots and stuff for 166421
| Is 166421 a square number? | 166421 is NOT a square number |
| Is 166421 a cube number? | 166421 is NOT a cube number |
| Square root of the number 166421 | 407.94730051809 |
| Cube root of the number 166421 | 55.005068403442 |
Recreational math for 166421
| Number 166421 reversed | 124661 |
| Sum of the digits | 20 |
| No of digits | 6 |